I measured it roughly and in position 1(on one side only) I had infinity resistance - not good! = means it gives out the full volume in the position of zero volume! It took me approx. half an hour to dismount it and to find the "microscopical" mistake - one plastic-washer was inverted and so the position of the riding contact was ½ millimeter in the wrong position... Now it's fixed and gives me zero Ohm at position one. (-::